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Can a .357sig round be shot thru a .357 revolver?
- Thread starter dentodoc
- Start date
FirstFreedom
Moderator
No. And in addition to being unsafe, it's impossible. Two different animals completely.
Come on fella's have some imagination.
Yes you could do it. You however would need to have a gun smith open up the cylinder to accept the case. Then have them cut the cylinder for the moon clips.
Then however you would'nt be able to fire .357 mag in it any more.
But you'd have a hell of a custom revolver.
I only post b/c I like stuff like that. I had a model 28 opened up for .41 special, just for the hell of it.
Bowen arms does alot of that stuff, look at their
web site.
Yes you could do it. You however would need to have a gun smith open up the cylinder to accept the case. Then have them cut the cylinder for the moon clips.
Then however you would'nt be able to fire .357 mag in it any more.
But you'd have a hell of a custom revolver.
I only post b/c I like stuff like that. I had a model 28 opened up for .41 special, just for the hell of it.
Bowen arms does alot of that stuff, look at their
web site.
41 Special,
You failed to add that accuracy would really S..., well, really be poor.
A 357 is .357 dia, thus is the barrel
A 357 Sig is .355 dia, (I.e. a 9 mm dia bullet) and just would not fit or seal in the groves in a 357 barrel. Sure the round would go bang and head down range if you mod. the cyl to shoot them, but why???
You failed to add that accuracy would really S..., well, really be poor.
A 357 is .357 dia, thus is the barrel
A 357 Sig is .355 dia, (I.e. a 9 mm dia bullet) and just would not fit or seal in the groves in a 357 barrel. Sure the round would go bang and head down range if you mod. the cyl to shoot them, but why???
juliet charley
New member
I'm not sure you could open up a K or L frame enough to hold six safely--it'd take a N-frame. You'd probably be forced to go to new cylinder with five holes in it. The bottle-neck case would probably create some real problems in a revolver cylinder.
Besides, who'd want to do it? The .357 Magnum is head and shoulders above the 357 SIG. It can do with 158-grains what the SIG does with 125-grains.
Besides, who'd want to do it? The .357 Magnum is head and shoulders above the 357 SIG. It can do with 158-grains what the SIG does with 125-grains.
K in AR,
Maybe you should slug your bore, and see what size the bore on any .357 you own is.
You might be suprised to find it's a little bigger than you think.
And as far as why ?
Who do you know with a .357 SIG revolver ? In the gun world dare to be different.
I also have a pistol chambered for .41 Action Express, Why ?
B/C you don't.
The same reason I don't own a Glock. Why ?
B/C you do.
By 'you' of course I mean the average gun owner.
Maybe you should slug your bore, and see what size the bore on any .357 you own is.
You might be suprised to find it's a little bigger than you think.
And as far as why ?
Who do you know with a .357 SIG revolver ? In the gun world dare to be different.
I also have a pistol chambered for .41 Action Express, Why ?
B/C you don't.
The same reason I don't own a Glock. Why ?
B/C you do.
By 'you' of course I mean the average gun owner.
Last edited:
How do you plan to extract the cases, Mikey?
K in AR, that .002 of caliber difference is really nothing. 9mm bullets don't bounce around on the way out of the gun. The old Medusa revolver shot .38s and 9mm with equally good accuracy.
I wonder if 9mm revolver makers even bother with different barrels when they offer 9mm in what is normally a .38 gun.
Funny how such a simple question about caliber compatibility becomes an actual thread.
K in AR, that .002 of caliber difference is really nothing. 9mm bullets don't bounce around on the way out of the gun. The old Medusa revolver shot .38s and 9mm with equally good accuracy.
I wonder if 9mm revolver makers even bother with different barrels when they offer 9mm in what is normally a .38 gun.
Funny how such a simple question about caliber compatibility becomes an actual thread.
ejection? you mean you think it would shoot more than one cylinder full?
Picky, picky picky. LOL
So my brain froze a little.
I just really like the idea of bottleneck cartridges in a hand gun, so I was thinking more about that than anything else.
Elevating the nose of the bullet a bit seems to help with any issues of sticking on a feed ramp, and being able to headspace on a cartridge shoulder instead of a very thin case rim seems appealing. I am surprised this design isn't used more. The dependability of guns chambered for this round has been noted by more than one gun writer. Probably has no real applicability to a revolver.
Picky, picky picky. LOL
So my brain froze a little.
I just really like the idea of bottleneck cartridges in a hand gun, so I was thinking more about that than anything else.
Elevating the nose of the bullet a bit seems to help with any issues of sticking on a feed ramp, and being able to headspace on a cartridge shoulder instead of a very thin case rim seems appealing. I am surprised this design isn't used more. The dependability of guns chambered for this round has been noted by more than one gun writer. Probably has no real applicability to a revolver.
Lets consider the rationale for converting a 357 Magnum revolver to 357 Sig.
Upside: You would be the only kid on the block with one. You could use the full moon clips made for the S&W 610 (assuming you started with an N frame). No one would steal it from you cause no one else wants one.
Downside: Ammo would be more expensive, less powerful and have fewer options to choose from. You could experience the same problems that caused the discontinuation of the 22 Jet Model 53. The gunshop you talk to about the conversion may refuse to sell you any more guns or ammo because they think you are mentally ill.
Upside: You would be the only kid on the block with one. You could use the full moon clips made for the S&W 610 (assuming you started with an N frame). No one would steal it from you cause no one else wants one.
Downside: Ammo would be more expensive, less powerful and have fewer options to choose from. You could experience the same problems that caused the discontinuation of the 22 Jet Model 53. The gunshop you talk to about the conversion may refuse to sell you any more guns or ammo because they think you are mentally ill.
Couple of thoughts in this thread...
1. The ".355 - .358" caliber difference. In reality, bullets vary in "9mm" pistols from .355 to .362 inches. The barrel diameter varies as well. In addition, when the round fires, the bullet is 'upset' and fills out the barrel mouth in a pistol or the chamber mouth in a revolver. Then the bullet is swedged to bore diameter. It is a very rare occurance for the bullet not to be bore diameter by the time it leaves the barrel. And it works both ways; the smaller bullets 'upset' and the larger bullets 'swedge'. Further, it doesn't seem to make much pressure difference.
(One test loaded regular .30-06 loads, bullet weight, powder charge and everything; except the bullets were 8mm/.323" bullets. No perceived difference in chambering, firing or accuracy.)
2. Bottlenecked cartridges in revolvers usually don't work well. The cases typcially 'back up' against the recoil shield and wedge the cylinder in place. The .38-40 and .44-40 rounds are about the only rounds sucessful in this regard; both of those rounds are 'low pressure' rounds, unlike the .357 SIG.
Nor is there any advantage in a bottlenecked handgun round. The .357 SIG has no case volume advantage over a .357 Magnum, certainly less than a .357 Maximum, and is probably equal to a .38 Special. The final straw here is the overall limits of the revolver: if the revolver will only contain a maximum chamber pressure of - say - 40,000 psi, the shape of the combustion chamber makes no difference at all.
In a pistol, the bottle neck does allow for somewhat improved chambering. One can use square shouldered bullets and not be concerned about the bullet hanging up on the chamber mouth. This was the whole idea behind Jimmy Clark's early work with target 1911s chambered for the .38/45 round (a 45 ACP necked down to accept a 38 caliber, 148 grain, HBWC.) It was a neat idea, but a pain in the reloading press and never caught on commercially. But one sees them from time to time.
3. Yup, gotta have something to extract rimless cases. S&W made a 9x19 revolver in the '70s that had a tricky spring loaded extractor system that removed the need for moon clips. Of course, moon clips for 9x19 did not exist at that time... The mechanism worked okay, but was complicated to make. I have a feeling that repair work would be a gunsmith's nightmare. They don't do it anymore, as far as I know.
4. But hey! Why modify a revolver? Use the moon clips and one could fire .357 SIG from either a 10mm or .40S&W revolver. Velocity and accuracy would probably leave something to be desired, but the rounds would go bang. Just like firing .38-40 ammo in a .44-40 chamber.
This last paragraph is not a recomendation or endorsement. I just point it out as possible. In the words of Yogi Berra, "In theory, there's no difference between theory and practise; in practise, there is."
1. The ".355 - .358" caliber difference. In reality, bullets vary in "9mm" pistols from .355 to .362 inches. The barrel diameter varies as well. In addition, when the round fires, the bullet is 'upset' and fills out the barrel mouth in a pistol or the chamber mouth in a revolver. Then the bullet is swedged to bore diameter. It is a very rare occurance for the bullet not to be bore diameter by the time it leaves the barrel. And it works both ways; the smaller bullets 'upset' and the larger bullets 'swedge'. Further, it doesn't seem to make much pressure difference.
(One test loaded regular .30-06 loads, bullet weight, powder charge and everything; except the bullets were 8mm/.323" bullets. No perceived difference in chambering, firing or accuracy.)
2. Bottlenecked cartridges in revolvers usually don't work well. The cases typcially 'back up' against the recoil shield and wedge the cylinder in place. The .38-40 and .44-40 rounds are about the only rounds sucessful in this regard; both of those rounds are 'low pressure' rounds, unlike the .357 SIG.
Nor is there any advantage in a bottlenecked handgun round. The .357 SIG has no case volume advantage over a .357 Magnum, certainly less than a .357 Maximum, and is probably equal to a .38 Special. The final straw here is the overall limits of the revolver: if the revolver will only contain a maximum chamber pressure of - say - 40,000 psi, the shape of the combustion chamber makes no difference at all.
In a pistol, the bottle neck does allow for somewhat improved chambering. One can use square shouldered bullets and not be concerned about the bullet hanging up on the chamber mouth. This was the whole idea behind Jimmy Clark's early work with target 1911s chambered for the .38/45 round (a 45 ACP necked down to accept a 38 caliber, 148 grain, HBWC.) It was a neat idea, but a pain in the reloading press and never caught on commercially. But one sees them from time to time.
3. Yup, gotta have something to extract rimless cases. S&W made a 9x19 revolver in the '70s that had a tricky spring loaded extractor system that removed the need for moon clips. Of course, moon clips for 9x19 did not exist at that time... The mechanism worked okay, but was complicated to make. I have a feeling that repair work would be a gunsmith's nightmare. They don't do it anymore, as far as I know.
4. But hey! Why modify a revolver? Use the moon clips and one could fire .357 SIG from either a 10mm or .40S&W revolver. Velocity and accuracy would probably leave something to be desired, but the rounds would go bang. Just like firing .38-40 ammo in a .44-40 chamber.
This last paragraph is not a recomendation or endorsement. I just point it out as possible. In the words of Yogi Berra, "In theory, there's no difference between theory and practise; in practise, there is."
That .362 sounds like the diameter of 9mm Makarov, which is a completely different cartridge. Or are there some 9x19 rounds that big?In reality, bullets vary in "9mm" pistols from .355 to .362 inches.
FirstFreedom
Moderator
I believe that "9mm bullets" - 9mm, .380 auto, etc. are usually either .355 or .356, give or take 1/1,000th - usually .355.
Whereas .357 mag/ .38 spl bullets are usually either .357 or .358, give or take 1/1,000th.
Not sure what the 9mmMak size is...
And then there's the 6.5mm arisaka that chambered and shot .30-06.... (don't try that one at home however kiddos).
Whereas .357 mag/ .38 spl bullets are usually either .357 or .358, give or take 1/1,000th.
Not sure what the 9mmMak size is...
And then there's the 6.5mm arisaka that chambered and shot .30-06.... (don't try that one at home however kiddos).